JPH0524568B2 - - Google Patents

Info

Publication number
JPH0524568B2
JPH0524568B2 JP2620885A JP2620885A JPH0524568B2 JP H0524568 B2 JPH0524568 B2 JP H0524568B2 JP 2620885 A JP2620885 A JP 2620885A JP 2620885 A JP2620885 A JP 2620885A JP H0524568 B2 JPH0524568 B2 JP H0524568B2
Authority
JP
Japan
Prior art keywords
objective lens
optical
photodetector
lens
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2620885A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61187130A (ja
Inventor
Toshio Sugyama
Hideo Suenaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2620885A priority Critical patent/JPS61187130A/ja
Priority to DE8686101750T priority patent/DE3678311D1/de
Priority to EP86101750A priority patent/EP0191467B1/en
Priority to US06/829,066 priority patent/US4744069A/en
Publication of JPS61187130A publication Critical patent/JPS61187130A/ja
Publication of JPH0524568B2 publication Critical patent/JPH0524568B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP2620885A 1985-02-15 1985-02-15 光デイスク装置 Granted JPS61187130A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2620885A JPS61187130A (ja) 1985-02-15 1985-02-15 光デイスク装置
DE8686101750T DE3678311D1 (de) 1985-02-15 1986-02-12 Optisches plattengeraet.
EP86101750A EP0191467B1 (en) 1985-02-15 1986-02-12 Optical disc apparatus
US06/829,066 US4744069A (en) 1985-02-15 1986-02-13 Optical disc apparatus with access system having object lens control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2620885A JPS61187130A (ja) 1985-02-15 1985-02-15 光デイスク装置

Publications (2)

Publication Number Publication Date
JPS61187130A JPS61187130A (ja) 1986-08-20
JPH0524568B2 true JPH0524568B2 (zh) 1993-04-08

Family

ID=12187030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2620885A Granted JPS61187130A (ja) 1985-02-15 1985-02-15 光デイスク装置

Country Status (1)

Country Link
JP (1) JPS61187130A (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4475833B2 (ja) * 2001-03-02 2010-06-09 日本テキサス・インスツルメンツ株式会社 ミラー検出信号生成回路

Also Published As

Publication number Publication date
JPS61187130A (ja) 1986-08-20

Similar Documents

Publication Publication Date Title
EP0191467B1 (en) Optical disc apparatus
JPS6223371B2 (zh)
JPH06282849A (ja) 光記録媒体、光記録媒体の記録再生装置及び再生装置
JPH0227734B2 (zh)
JPS61188745A (ja) フオ−カスサ−ボ制御方式
JPH0551973B2 (zh)
JP2594901B2 (ja) 光デイスク装置
JPH0524568B2 (zh)
JPH0668498A (ja) 情報記録媒体処理装置
JP2785816B2 (ja) 光ディスク装置
JP2867361B2 (ja) 光ディスク装置用ピックアップ
JPH077528B2 (ja) 光学式情報記録装置
JP2867360B2 (ja) 光ディスク装置
JP2785815B2 (ja) 光ディスク装置
JP2559421B2 (ja) 光学的情報記録装置
KR100628184B1 (ko) 광 기록재생기의 액츄에이터 제어 장치
JP2570915B2 (ja) 光スポット制御方法
KR100606671B1 (ko) 광 기록재생기의 액츄에이터 진동 방지 방법
KR100237561B1 (ko) 포커스 서보 재인입 방법 및 장치
JP2863165B2 (ja) トラッキング装置
JPH1021566A (ja) トラッキングサーボ装置
JPH0441417B2 (zh)
JPH09128774A (ja) 光ディスク装置
JPH0381204B2 (zh)
JPS634251B2 (zh)

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term